Application Compendium - Agilent Technologies

Table 1. Library search results for a test set of 14 o-rings matched against
an o-ring spectral library. Samples and matches are listed by material
(item number). The similarity values are automatically calculated in the
MicroLab software and are based on a first derivative normalized dot product
correlation.
Sample 1st match Similarity 2nd match Similarity
NBR NBR 0.84 Ethylene propylene 0.21
(618316) (618316)
(618337)
NBR
(618333)
Silicone
(618341)
Kalrez
(618327)
Viton
(618313)
Viton
(618344)
Neoprene
(618325)
Fluorosilicone
(618311)
Fluorosilicone
(618319)
Polyurethane
(618340)
Silicone
(618318)
EPR
(618337)
EPR
(618314)
Butyl
(618339)
NBR
(618333)
Silicone
(618341)
Kalrez
(618327)
Viton
(618313)
Viton
(618344)
Neoprene
(618325)
Fluorosilicone
(618331)
Fluorosilicone
(618319)
Polyurethane
(618340)
Silicone
(618318)
EPR
(618337)
EPR
(618314)
Butyl
(618339)
0.819 Natural rubber
(618332)
0.71
0.977 Silicone
(618318)
0.963
0.953 Kalrez
(618328)
0.951
0.604 Kalrez
(618328)
0.15
0.71 Viton
(618313)
0.1
0.55 EPR
(618337)
0.14
0.95 Fluorosilicone
(618319)
0.89
0.97 Fluorosilicone
(618331)
0.963
0.955 Kalrez
(618328)
0.017
0.976 Silicone
(618341)
0.975
0.5 EPR
(618314)
0.37
0.46 EPR
(618337)
0.288
0.47 Neoprene (618315) 0.33
Conclusion
The Agilent 4100 ExoScan FTIR equipped with spherical
Ge ATR is proven to be an effective analyzer for
determining and verifying the identify of carbon black
filled polymer and elastomeric based seals, gaskets
and o-rings used in the chemical industry. These types
of materials have traditionally been difficult to analyze
by spectroscopic methods such as near-IR and Raman
and thus the 4100 ExoScan FTIR system offers a more
universal solution for determining the identify of both
carbon filled and non carbon filled materials. Other
manufacturing industries such as aerospace, food and
pharmaceuticals face similar issues.
Because of its performance, size and mobility , the 4100
ExoScan FTIR can be used in both the lab and/or where
the sample is located. This means that sealing materials
can be examined at the site of use, without having to
send them to a lab for measurement and waiting for
results. The dedicated MicroLab FTIR software makes
the system easy to use, so factory personnel can
accurately identify materials. Moreover, this is truly a
non-destructive methodology so samples do not need to
be cut or otherwise modified for measurement thereby
maintaining the integrity of the seal.
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damages in connection with the furnishing, performance or use of this material.
Information, descriptions, and specifications in this publication are subject to change
without notice.
© Agilent Technologies, Inc. 2012
Published February 1, 2012
Publication number: 5990-9878EN